Rolla Pws, MO
Lead detected, under the action levels
Latest 90th-percentile lead: 3.91 ppb (monitoring period 2022-2024). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.
About Rolla Pws
Rolla Pws serves about 20,800 people through 8,099 service connections, which makes it a large system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Phelps County, Missouri. EPA system ID: MO3010700; phone on file: 573-364-2195. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
Against the period ending 2022 (3.14 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Rolla Pws is 4.5 ppb across 8 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 3.91 ppb |
| 2022 | 3.14 ppb |
| 2021 | 3.14 ppb |
| 2021 | 3.14 ppb |
| 2019 | 4.41 ppb |
| 2018 | 4.41 ppb |
| 2018 | 4.41 ppb |
| 2016 | 4.5 ppb |
How Rolla Pws compares
Of the 1,674 Missouri systems with a lead result, the median latest reading is 1.04 ppb; 2 are over 15 ppb right now and 74 have gone over at some point. Rolla Pws's 3.91 ppb sits at the 87th percentile in Missouri and the 87th nationally (higher means more lead).
Nearby utilities
14 other systems share Phelps County; 0 of them have a higher latest lead result than Rolla Pws. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| St James Pws | 3,935 | 0 (not detected) |
| Phelps County Pwsd 2 South | 1,763 | 2.23 ppb |
| Phelps County Pwsd 1 | 800 | 0 (not detected) |
| Phelps County Pwsd 2 North | 523 | 0 (not detected) |
| Newburg Pws | 324 | 0.59 ppb |
| Kvc | 200 | 0 (not detected) |
| Gladlo Water & Sewer Inc | 182 | 0.51 ppb |
| Lakeside Community Inc | 160 | 0 (not detected) |
| Stately Mansion Mobile Villa | 100 | 0 (not detected) |
| Twmp Llc | 100 | 1.9 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Rolla, MO may offer free or low-cost kits through the utility. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Rolla Pws whether it covers that cost before hiring anyone - many utilities now do.
These figures describe homes the utility sampled, not your tap. Only your service line record or a test of your own water answers the question for your house. Why sampled homes are the worst-case ones is in the guide to reading the number. The action level is dropping - the 10 ppb rule from 2027.